Apple CEO Tim Cook has been in China for the last little while, where he met with officials and the country’s big mobile carriers, China Telecom (which already sells the iPhone) and China Mobile (which may be next).

He also took some time to visit one of the factories where iPhones are built.

As reported earlier by Bloomberg, Cook visited the Foxconn Zhengzhou Technology Park, which has more than 120,000 workers. Some of those workers build iPhones.